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/* 
 * 
 * Copyright 2018 gRPC authors. 
 * 
 * Licensed under the Apache License, Version 2.0 (the "License"); 
 * you may not use this file except in compliance with the License. 
 * You may obtain a copy of the License at 
 * 
 *     http://www.apache.org/licenses/LICENSE-2.0 
 * 
 * Unless required by applicable law or agreed to in writing, software 
 * distributed under the License is distributed on an "AS IS" BASIS, 
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 
 * See the License for the specific language governing permissions and 
 * limitations under the License. 
 * 
 */ 
 
#ifndef GRPCPP_EXT_SERVER_LOAD_REPORTING_H 
#define GRPCPP_EXT_SERVER_LOAD_REPORTING_H 
 
#include <grpc/support/port_platform.h>
 
#include <grpc/load_reporting.h>
#include <grpcpp/impl/codegen/config.h>
#include <grpcpp/impl/codegen/server_context.h>
#include <grpcpp/impl/server_builder_option.h>

namespace grpc { 
namespace load_reporter { 
namespace experimental { 
 
// The ServerBuilderOption to enable server-side load reporting feature. To
// enable the feature, please make sure the binary builds with the
// grpcpp_server_load_reporting library and set this option in the
// ServerBuilder.
class LoadReportingServiceServerBuilderOption
    : public grpc::ServerBuilderOption {
 public:
  void UpdateArguments(::grpc::ChannelArguments* args) override;
  void UpdatePlugins(std::vector<std::unique_ptr<::grpc::ServerBuilderPlugin>>*
                         plugins) override;
};
 
// Adds the load reporting cost with \a cost_name and \a cost_value in the
// trailing metadata of the server context.
void AddLoadReportingCost(grpc::ServerContext* ctx,
                          const TString& cost_name, double cost_value);
 
}  // namespace experimental 
}  // namespace load_reporter 
}  // namespace grpc 
 
#endif  // GRPCPP_EXT_SERVER_LOAD_REPORTING_H